Vertical manhole apparatus and method for providing access to leachate collection pipes in a landfill

ABSTRACT

A vertical manhole apparatus for use in a waste facility to provide access to one or more leachate collection pipe access points. The vertical manhole is stabilized using stabilizing features extending out from a vertical pipe of the vertical manhole apparatus.

PRIORITY

This application is a continuation of and claims priority to pendingU.S. Nonprovisional patent application Ser. No. 16/163,027 entitled“Vertical Manhole Apparatus and Method for Providing Access to LeachateCollection Pipes in a Landfill” which was filed on Oct. 17, 2018 whichclaims priority to U.S. Provisional Patent Application Ser. No.62/573,822 entitled “Waste Stabilized Vertical Manhole” which was filedon Oct. 18, 2017, the contents of which are incorporated herein byreference.

FIELD

This disclosure relates to the field of waste disposal. Moreparticularly, this disclosure relates to a vertical manhole apparatusfor use in a landfill to access leachate collection pipes.

BACKGROUND

Landfills that have been expanded multiple times over a period ofdecades are limited in future volume expansions by previously designedleachate collection systems. Extending leachate cleanout and accesspipes vertically from the base of a landfill as waste is placed in thelandfill has proven difficult. This is because waste that is placed in alandfill decomposes at different rates throughout the landfill and isnot stable from a geotechnical perspective. In non-landfill applicationsabove ground, a vertical pipe is often stabilized by a strong foundationand compacted backfill and is designed to withstand horizontal loads.However, designing a strong foundation for a vertical riser is notpractical in a landfill due to technical and regulatory constraints.

Landfills, often divided into separate cells, are currently designedwith a clay and geosynthetic base liner and a liquid collection systemat the base of each cell. The liner materials are not permitted to bepenetrated in order to prevent liquid from leaking out of the landfill.Environmental regulations require that landfills maintain less than aone-foot depth of liquid head on the liner and that the collection pipesbe limited in length for cleaning purposes, typically less than 2000feet in length. With limited success, landfill owners and engineers haveattempted to bring collection pipes to the surface with differentmanhole configurations. However, these manholes have typically failedover time due to the large differential settlements seen in landfills.This differential settlement results in horizontal and vertical forcescausing pipes or manholes to tilt or shear. Once a manhole in a wastemass starts to lean, a downward vertical force acts on the manhole withlittle upward resistance because the waste cannot support the weight ofthe manhole.

Most landfills currently do not overlay waste over leachate collectionpipe access points (leachate side slope risers on the perimeter of thelandfill) due to concerns over environmental compliance issues caused bythe possibility of a failed leachate collection system. Not being ableto expand the size (length and/or width) of the landfill reduces thevalue of the site and requires new areas to be developed as landfills.

What is needed, therefore, is an apparatus in a landfill wherein wasteof the landfill can be overlaid above one or more leachate collectionpipe access points so that the length and/or width of the landfill canbe extended, reducing the need for opening new landfills.

SUMMARY

The above and other needs are met by a vertical manhole apparatus whichprovides access to a leachate collection pipe access point so that wastecan be overlaid above such access point, thereby allowing for theexpansion of the size of the landfill. Such apparatus will preferablyinclude further features to help to stabilize the horizontal forces thatcause vertical pipes and manholes to fail in a landfill wherein suchapparatus will help to counter vertical and/or horizontal forces if avertical manhole starts to lean. Such features include a vertical pipeincluding segments of pipe that extend vertically above a foundation ofthe vertical manhole apparatus. In some embodiments, further featuresinclude cables which have deadman anchors attached at distal ends of thecables wherein the anchors are fixed within masses of waste in thelandfill. At their proximal ends, the cables are preferably connected toa tension control system located proximate to the top of the verticalmanhole apparatus wherein the cables extend into and up the verticalpipe to the tension control system. In an alternative embodiment withouta tension control system, the proximal ends of the cables are attachedto the vertical pipe directly and do not extend up the vertical pipe.

In one embodiment, a vertical manhole apparatus is disclosed forproviding access to one or more leachate collection pipe access points.The apparatus includes a plurality of pipe segments joined togethervertically above a foundation in a landfill wherein the plurality ofpipe segments form a vertical pipe and wherein a first pipe segmentincludes a first aperture of the first pipe segment extending through awall of the first pipe segment; a first cable extending through thefirst aperture of the first pipe segment; a first deadman anchorconnected to a first end of the first cable and located in a first massof waste in the landfill; and a tension control system wherein a secondend of the first cable is connected to the tension control system andwherein the tension control system controls the tension of the firstcable by increasing or decreasing the tension of the first cable betweenthe tension control system and the first deadman anchor. The verticalmanhole apparatus preferably includes a protective sleeve surrounding atleast a portion of the first cable. In one embodiment, the protectivesleeve further includes a first protective sleeve member and a secondprotective sleeve member wherein the first protective sleeve member isnarrower that the second protective sleeve member such that the firstprotective sleeve member is configured to slide at least partiallyinside of the second protective sleeve member.

Preferably, the vertical manhole apparatus described above includes atleast three apertures extending through the wall of the first pipesegment, the at least three apertures comprising the first aperture ofthe first pipe segment, a second aperture of the first pipe segment, anda third aperture of the first pipe segment; a second deadman anchor; asecond cable extending through the second aperture of the first pipesegment wherein a first end of the second cable is connected to thesecond deadman anchor which is located in a second mass of waste in thelandfill and wherein a second end of the second cable is connected tothe tension control system; a third deadman anchor; a third cableextending through the third aperture of the first pipe segment wherein afirst end of the third cable is connected to the third deadman anchorwhich is located in a third mass of waste in the landfill and wherein asecond end of the third cable is connected to the tension controlsystem; and the tension control system for controlling the tension ofthe second cable by increasing or decreasing the tension between thesecond deadman anchor and the tension control system and for controllingthe tension of the third cable by increasing or decreasing the tensionbetween the third deadman anchor and the tension control system. In oneembodiment, the vertical manhole apparatus further includes a firstcable roller attached adjacent to the first aperture of the first pipesegment wherein the first cable roller is provided to allow the firstcable to roll or slide easily along the first cable roller as thetension of the first cable is controlled by the tension control system;a second cable roller attached adjacent to the second aperture of thefirst pipe segment wherein the second cable roller is provided to allowthe second cable to roll or slide easily along the second cable rolleras the tension of the second cable is controlled by the tension controlsystem; and a third cable roller attached adjacent to the third apertureof the first pipe segment wherein the third cable roller is provided toallow the third cable to roll or slide easily along the third cableroller as the tension of the third cable is controlled by the tensioncontrol system. In certain embodiments, the tension control systemincludes one or more winches. If more than one winch is used, suchwinches can be independently controlled. More specifically, the tensioncontrol system may include a first cable winch connected to the firstcable, a second cable winch connected to the second cable, and a thirdcable winch connected to the third cable.

The first aperture of the first pipe segment, the second aperture of thefirst pipe segment, and the third aperture of the first pipe segment areseparated from one another along the wall of the first pipe segment byapproximately 120 degrees.

Embodiments of the vertical manhole apparatus described above preferablyfurther include a cleanout riser pipe extending adjacent to the verticalpipe from a cleanout riser pipe access point to a collection pipe accesspoint proximate a leachate collection pipe.

Embodiments of the vertical manhole apparatus may further include avertical manhole apparatus wherein the plurality of pipe segmentsfurther include a second pipe segment which includes at least oneaperture extending through the wall of the second pipe segment, the atleast one aperture including a first aperture of the second pipesegment; a fourth deadman anchor; a fourth cable extending through thefirst aperture of the second pipe segment wherein a first end of thefourth cable is connected to the fourth deadman anchor which is locatedin a fourth mass of waste in the landfill and wherein a second end ofthe fourth cable is connected to the tension control system; and thetension control system for controlling the tension of the fourth cableby increasing or decreasing the tension between the fourth deadmananchor and the tension control system.

In a further exemplary embodiment, the vertical manhole apparatus mayfurther include a vertical manhole apparatus wherein the second pipesegment further comprising at least three apertures extending throughthe wall of the second pipe segment, the at least three aperturesincluding the first aperture of the second pipe segment, a secondaperture of the second pipe segment, and a third aperture of the secondpipe segment; a fifth deadman anchor; a fifth cable extending throughthe second aperture of the second pipe segment wherein a first end ofthe fifth cable is connected to the fifth deadman anchor which islocated in a fifth mass of waste in the landfill and wherein a secondend of the fifth cable is connected to the tension control system; asixth deadman anchor; a sixth cable extending through the third apertureof the second pipe segment wherein a first end of the sixth cable isconnected to the sixth deadman anchor which is located in a sixth massof waste in the landfill and wherein a second end of the sixth cable isconnected to the tension control system; and the tension control systemfor controlling the tension of the fifth cable by increasing ordecreasing the tension between the fifth deadman anchor and the tensioncontrol system and for controlling the tension of the sixth cable byincreasing or decreasing the tension between the sixth deadman anchorand the tension control system.

In one embodiment, the first aperture of the first pipe segment isoffset from the first aperture of the second pipe segment byapproximately 60 degrees.

In another aspect, a vertical manhole apparatus is disclosed whichincludes a plurality of first pipe segments joined together verticallyabove a foundation in a landfill including a first pipe first segmentwherein the plurality of first pipe segments form a first vertical pipe;a cleanout riser pipe extending inside the first vertical pipe from acleanout riser pipe access point to a collection pipe access pointproximate a leachate collection pipe; and a first stabilizer engagedwith the first pipe first segment and extending from the first pipefirst segment out into waste in the landfill. In one embodiment, thevertical manhole apparatus further includes a tension control systemwherein the first stabilizer further includes a first cable connected toa first deadman anchor at a proximal end of the first cable and thetension control system at a distal end of the first cable and whereinthe tension control system controls the tension of the first cable byincreasing or decreasing the tension of the first cable between thetension control system and the first deadman anchor.

The vertical manhole apparatus preferably further includes a secondstabilizer engaged with the first pipe first segment and extending fromthe first pipe first segment; and a third stabilizer engaged with thefirst pipe first segment and extending from the first pipe firstsegment. In a related embodiment, the vertical manhole apparatus furtherincludes a tension control system wherein (a) the first stabilizerfurther comprises a first cable connected to a first deadman anchor at aproximal end of the first cable and the tension control system at adistal end of the first cable, (b) the second stabilizer furthercomprises a second cable connected to a second deadman anchor at aproximal end of the second cable and the tension control system at adistal end of the second cable, and (c) the third stabilizer furthercomprises a third cable connected to a third deadman anchor at aproximal end of the first cable and the tension control system at adistal end of the first cable and wherein (1) the tension control systemcontrols the tension of the first cable by increasing or decreasing thetension of the first cable between the tension control system and thefirst deadman anchor, (2) the tension control system controls thetension of the second cable by increasing or decreasing the tension ofthe second cable between the tension control system and the seconddeadman anchor, and (3) the tension control system controls the tensionof the third cable by increasing or decreasing the tension of the thirdcable between the tension control system and the third deadman anchor.In a related embodiment, the tension control system further includes awinch located adjacent to an edge of waste from the landfill. In arelated embodiment, the tension control system further includes aplurality of winches located adjacent to an edge of waste from thelandfill.

In a different related embodiment, the tension control system furtherincludes a first winch located inside the first vertical pipe adjacentto an aperture in the first vertical pipe through which the first cableextends. The vertical manhole apparatus may further include a controldevice for controlling the first winch wherein the control device is incommunication with the first winch but wherein the control device isremote from the first winch.

In one embodiment the tension control system further includes a firstwinch, a second winch, and a third winch and wherein the first winch islocated inside the first vertical pipe adjacent to a first aperture inthe first vertical pipe through which the first cable extends, whereinthe second winch is located inside the first vertical pipe adjacent to asecond aperture in the first vertical pipe through which the secondcable extends, and wherein the third winch is located inside the firstvertical pipe adjacent to a third aperture in the first vertical pipethrough which the third cable extends.

In one embodiment the first stabilizer includes a first rod connected tothe first pipe first segment. In a related embodiment, the firststabilizer further includes a first rod connected to the first pipefirst segment, the second stabilizer further includes a second rodconnected to the first pipe first segment, and the third stabilizerfurther includes a third rod connected to the first pipe first segment.In one embodiment, the first stabilizer further includes a first deadmananchor connected to the first rod. In one embodiment, the verticalmanhole apparatus further includes a first motor attached adjacent tothe vertical pipe and engaged with the first rod for adjusting the depthat which the first rod extends away from the vertical pipe, a secondmotor attached adjacent to the vertical pipe and engaged with the secondrod for adjusting the depth at which the second rod extends away fromthe vertical pipe, and a third motor attached adjacent to the verticalpipe and engaged with the third rod for adjusting the depth at which thethird rod extends away from the vertical pipe. In a related embodiment,the first stabilizer further includes a first deadman anchor connectedto the first rod, the second stabilizer further includes a seconddeadman anchor connected to the second rod, and the third stabilizerfurther includes a third deadman anchor connected to the third rod.

In one embodiment, the first stabilizer further includes a first cableconnected to the first rod and a first deadman anchor connected to thefirst cable. In a related embodiment, the first stabilizer furtherincludes a first cable connected to the first rod and a first deadmananchor connected to the first cable; the second stabilizer furtherincludes a second cable connected to the second rod and a second deadmananchor connected to the second cable; and the third stabilizer furtherincludes a third cable connected to the third rod and a third deadmananchor connected to the third cable.

In one embodiment, the vertical manhole apparatus includes a pluralityof second pipe segments joined together vertically above the foundationin the landfill wherein the plurality of second pipe segments form asecond vertical pipe located inside the first vertical pipe with spacebetween the first vertical pipe and the second vertical pipe and whereinthe cleanout riser pipe extends inside the second vertical pipe from thecleanout riser pipe access point to the collection pipe access pointproximate the leachate collection pipe.

In a different embodiment, the first stabilizer further includes ageomat. In one related embodiment, the geomat further includes anaperture that fits closely around the first vertical pipe. In a relatedembodiment, the geomat further includes an aperture that fits around thefirst vertical pipe and the vertical manhole is configured so that thatgeomat is slidably engaged along the vertical pipe. In a relatedembodiment, the first stabilizer further includes a first geomat, thesecond stabilizer further includes a second geomat, and the thirdstabilizer further includes a third geomat.

In addition to embodiments of a vertical manhole apparatus a method ofadjusting the orientation of a vertical manhole apparatus for providingaccess to one or more leachate collection pipe access points in alandfill is also disclosed. The method preferably includes the steps of(i) engaging a first stabilizer with a vertical pipe which forms part ofa vertical manhole apparatus located in the landfill wherein at least aportion of the first stabilizer operates as a deadman anchor located inwaste inside the landfill; and (ii) adjusting the first stabilizer usinga tension control system in order to pull on the vertical pipe andthereby adjust the orientation of the vertical pipe relative tosurrounding waste inside the landfill. The method preferably furtherincludes the steps of (iii) engaging a second stabilizer with thevertical pipe wherein at least a portion of the second stabilizeroperates as a deadman anchor located in waste inside the landfill; (iv)engaging a third stabilizer with the vertical pipe wherein at least aportion of the third stabilizer operates as a deadman anchor located inwaste inside the landfill; and (v) adjusting the first stabilizer, thesecond stabilizer and the third stabilizer using a tension controlsystem in order to pull on the vertical pipe and thereby adjust theorientation of the vertical pipe relative to surrounding waste insidethe landfill.

The summary provided herein is intended to provide examples ofparticular disclosed embodiments and is not intended to cover allpotential embodiments or combinations of embodiments. Therefore, thissummary is not intended to limit the scope of the invention disclosurein any way, a function which is reserved for the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Further features, aspects, and advantages of the present disclosure willbecome better understood by reference to the following detaileddescription, appended claims, and accompanying figures, wherein elementsare not to scale to more clearly show the details, wherein likereference numbers indicate like elements throughout the several views,and wherein:

FIG. 1 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus as described herein including a vertical pipeincluding a plurality of pipe segments and adjustable stabilizers;

FIG. 2 shows a plan view of the embodiment of the vertical manholeapparatus shown in FIG. 1 at a location shown by line A-A in FIG. 1along the vertical pipe below a tension control system;

FIG. 3 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus that is a variation of the apparatus shown in FIG. 1wherein the variation includes adjustable stabilizers oriented at anglesother than horizontal in the waste mass;

FIG. 4 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus that is a variation of the apparatus shown in FIG. 1wherein the variation includes the adjustable stabilizers incorporateprotective sleeves along the cables of the adjustable stabilizer toprevent binding in the waste mass;

FIG. 5 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus that includes a variation of the protective sleeveshown in FIG. 4 wherein such protective sleeves provide more flexibilityfor tightening or loosening the adjustable stabilizers;

FIG. 6 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus as described herein including a vertical pipeincluding a plurality of pipe segments and non-adjustable stabilizers;

FIG. 7 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus that includes a variation of the apparatus shown inFIG. 1 with the addition of adjustable threaded rods extending out fromthe pipe and connected to cables which extend out to deadman anchors;

FIG. 8 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus that includes a variation of the apparatus shown inFIG. 1 with threaded poles used instead of cables;

FIG. 9 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus that includes a variation of the apparatus shown inFIG. 1 with the addition of a second vertical pipe such that the outervertical pipe helps protect the inner vertical pipe;

FIG. 10 shows the apparatus from FIG. 9 cut along line B-B;

FIG. 11 shows a cutaway profile view of an embodiment of a verticalmanhole apparatus that includes a variation of the apparatus shown inFIG. 1 with the tensioning devices located within the vertical pipe;

FIG. 12 shows a a cutaway profile view of an embodiment of a verticalmanhole apparatus that includes a variation of the apparatus shown inFIG. 1 with the tension control system replaced by one or more geomatsextending out from the vertical pipe;

FIG. 13 shows the apparatus from FIG. 12 cut along line C-C;

FIG. 14 shows a variation of how a geomat is movably attached to thevertical pipe shown in FIG. 12; and

FIG. 15 shows a plan view of an embodiment of a vertical manholeapparatus that includes a variation of the apparatus shown in FIG. 1situated inside a waste storage mass wherein a plurality of tensioncontrol devices are located outside the waste storage mass forcontrolling adjustable stabilizers from outside the waste storage mass

The figures are provided to illustrate concepts of the inventiondisclosure and are not intended to embody all potential embodiments ofthe invention. Therefore, the figures are not intended to limit thescope of the invention disclosure in any way, a function which isreserved for the appended claims.

DETAILED DESCRIPTION

FIG. 1 shows a cutaway profile view of a vertical manhole apparatus 10for use in a landfill to provide access to a leachate collection pipeaccess point. FIG. 2 shows a top plan view of the apparatus shown inFIG. 1 cut at line A-A. The manhole apparatus 10 operates as a leachateriser/cleanout extension so that waste can be placed vertically above aleachate collection pipe access point, thereby expanding the widthand/or length of a landfill. The manhole apparatus 10 is constructed insegments 12 stacked on top of one another as shown in FIG. 1 to form avertical pipe 14. The term “segments” is defined herein to refer tosections of the vertical pipe 14. In one embodiment, the segments 12 aremade of concrete, but such segments can also be made of other materialssuch as metal or metal alloy (e.g., steel), fiberglass, or otherbuilding material known to persons having ordinary skill in the art andwhich are used for the same or similar structures.

Construction of the segments 12 will also include the positioning ofadjustable stabilizers 16 (including deadman anchors 18 attached tocables 20) to prevent segments 12 from pulling apart. More specifically,a series of deadman anchors 18 (poles, pipes, geosynthetic mesh or othermaterial) connected by cables 20 will physically engage with a largemass of waste to help stabilize the vertical pipe 14 and hold the pipe14 in place. The connecting cables 20 extend through apertures 22 in aparticular segment 12A and are preferably adjustable in length whichwill allow a landfill operator to adjust the vertical alignment of thevertical pipe 14 over time and resist the shear forces on the verticalpipe 14 caused by differential settlement within the waste mass in thelandfill. Each aperture 22 preferably includes a cable roller 24 orother similar feature adjacent thereto on which cables 20 can slide orroll. Cables 20 which are pulled along such cable rollers 24 or othersimilar devices along the vertical pipe 14 are said to be “engaged with”the vertical pipe 14 even though such cables 20 may not be attacheddirectly to or otherwise connected directly to the vertical pipe 14.

The cables 20 are preferably drawn to a cable tension control system 26which preferably includes a winch (e.g., 20,000 lb. min.) or othersimilar device known to persons having ordinary skill in the art fortightening or loosening the cables 20. More than one winch may beemployed as shown in FIG. 1 showing the cable tension control system 26including a first winch 26A, a second winch 26B, a third winch 26C, afourth winch 26D, a fifth winch 26E, and a sixth winch 26F wherein eachwinch can be independently controlled to pull different cables todifferent lengths which affects tension along each of the cables. Thewinches may be manual (non-motorized) winches or motorized winches.

The adjustable stabilizers 16 (or “stabilizers”), due to their geometry,will also exert a vertical force on the vertical pipe 14 preventing thesegments 12 from separating from vertical tension forces. The connectingcables 20 preferably radiate from the vertical pipe 14 at angles α and β(preferably at about 120° each) as shown in FIG. 2 and will be attachedat multiple heights on the vertical pipe 14 on different segments 12 asshown in FIG. 1. For cables 20 extending through a different (higher orlower) segment 12 (e.g., segment 12B), such cables 20 are preferablyhorizontally offset from the cables above and/or below (e.g., by 60°).In embodiments employing multiple groups of cables at differentelevations, the vertical distance(s) “L” between sets of cables 20 alongthe vertical pipe 14 can range from about 2 meters to about 6 meters.Such distances may be uniform along the vertical pipe 14 or my increaseor decrease between groups of cables depending on the specific elevationof the groups of cables 20 along the vertical pipe 14. The distance W₁and W₂ at which deadman anchors are separated from the vertical pipe 14may range from about one foot to many feet such as 10 feet, 20 feet ormore depending on the embodiment.

The cables 20 are connected to the deadman anchors 18 by connectors 28such as, for example, eye to eye swivel connectors. Although a specifictype of connector is mentioned herein, persons having ordinary skill inthe art will appreciate that various other mechanical connectors areavailable for use and this disclosure is not intended to be limited by aparticular type of connector to connect cables 20 (or other structures)to deadman anchors 18 for this or any other embodiment described herein.The specific configuration of the vertical pipe 14, cables 20 anddeadman anchors 18 may, in some cases, require a geotechnical andstructural analysis. The vertical pipe 14 rests vertically on afoundation 30 typically made from concrete resting on the landfill base32 (e.g., liner materials) but not penetrating the liner materials.Buffer materials can be laced between the base structure and the linerto prevent liner penetration or damage. The manhole apparatus 10provides vertical access to a leachate collection pipe 34 via a leachatecollection pipe access point 36 at a location where the leachatecollection pipe 34 is connected to one or more cleanout riser pipes 38that extend up through or adjacent to the vertical pipe 14 to a cleanoutriser pipe access point 40. The leachate collection pipe 34 and thecleanout riser pipes 38 are shown in broken lines in FIG. 1 and FIG. 2.

The vertical manhole apparatus 10 has many advantages including itsability to resist much greater horizontal shear and vertical tensionforces than the previously utilized manholes and pipes in landfillswhich do not include features described herein. This stability isaccomplished by utilizing the adjustable stabilizers 16 (cables 20 andanchors 18) that will allow adjustments over an extended period of time,keeping the vertical pipe 14 intact and operational throughout the lifeof the overall collection system of the landfill. The vertical manholeapparatus 10 will allow landfills to utilize waste disposal capacitythat is currently unusable in areas that cannot be filled because of theneed to access the cell drainage systems. The vertical manhole apparatus10 will provide a stable, reliable way to extend leachate collectionlines vertically within a landfill and will also allow landfill cells tobe developed and constructed in new geometric shapes that can maximizevolume by removing the typical leachate line limit of approximately 2000feet.

FIG. 3 shows an embodiment of the vertical manhole apparatus 10 in whichthe cables 20 are oriented at different angles relative to the verticalpipe 14 wherein such angles are greater than and/or less than 90°relative to the vertical pipe 14. Preferably, a first group of cables20A and associated deadman anchors 18A are oriented upward at an angle δpreferably ranging from about 100° to about 160° and a second group ofcables 20B and associated deadman anchors 18B are oriented downward atan angle ε preferably ranging from about 20° to about 80°.

FIG. 4 shows a related embodiment in which protective sleeves 42 areused to protect the cables 20 and allow for the cables 20 to move morefreely inside surrounding waste material. The protective sleeves 42 caninclude, for example, pipes or other similar hollow structures. Theprotective sleeves 42 protect the cables 20 from being in direct contactwith surrounding waste material which could damage the cables 20 andcause undesirable friction to the tensioning efforts of tightening orloosening the cables 20. Preferably, multiple protective sleeves 42 areused along a single cable 20 wherein the multiple protective sleeves 42are sized differently (i.e., different diameters) so that, for example,a first protective sleeve 42A can slide inside and along a secondprotective sleeve 42B as shown, for example, in FIG. 5, thereby allowingthe cable 20 to be tightened or loosened and still use and maintain theprotective sleeves 42 around the cables 20.

In a related embodiment of a vertical manhole apparatus 100 shown inFIG. 6, non-adjustable stabilizers 102 are used instead of theadjustable stabilizers 16. The non-adjustable stabilizers 102 includecables 104 which extend from deadman anchors 18 to a segment 12A of thevertical pipe 14. The cables 104 do not extend up the length of thevertical pipe 14 but rather terminate at or inside the vertical pipe 14.In some cases the cables 104 terminate after extending through apertures22. The cables 104 are held in place adjacent to the vertical pipe 14using a connection apparatus 106. Mechanical means for attaching a cable(e.g., a metal cable) to a wall structure including, for example, aconcrete wall, are well known to persons having ordinary skill in theart and are not described in detail here. As such, this disclosure isnot intended to be limited by any particular type of connectionapparatus 106 shown in FIG. 6.

FIG. 7 shows an example of a vertical manhole apparatus 200 includingstabilizers 202. The stabilizers 202 include rods 204 extending throughapertures 22 in a segment 12C of a vertical pipe 14 wherein the rods 204are connected to the vertical pipe 14. Preferably, the rods 204 arethreaded at least in part and can be adjusted to extend out of thevertical pipe 14 further or to retract into the vertical pipe 14 furtherdepending on which direction the rods 204 are rotated. The stabilizers202 preferably further include cables 206 which are attached to the rods204 at proximal ends of the cables 206 and that extend out havingdeadman anchors 18 attached to the cables 206 at distal ends of thecables 206. The deadman anchors can extend out at various angles ζ.

In a similar embodiment shown in FIG. 8, a vertical manhole apparatus300 is shown in which stabilizers 302 are used which include poles 304connected to a vertical pipe 14 of the manhole apparatus 300. The poles304 extend out from the vertical pipe 14 and can, in some embodiments,include deadman anchors 18 attached to distal ends of the poles 304.However, versions of the vertical manhole apparatus 300 are contemplatedthat do not include deadman anchors 18 attached to the poles 304. Thepoles 304 are preferably threaded at least along some length of thepoles 304 so that the poles 304 can be screwed farther out or fartherinto the vertical pipe 14, thereby allowing a way to adjust the poles304 and, in some embodiments, the deadman anchors 18.

A different vertical manhole apparatus 400 is shown in FIGS. 9 and 10which includes an outer wall 402 and an inner pipe 404 including pipesegments 406. FIG. 10 shows a top plan view of the vertical manholeapparatus 400 cut at line B-B in FIG. 9. The vertical manhole apparatus400 is similar to the vertical manhole apparatus 10 shown in FIG. 1 inthat the vertical manhole apparatus 400 also includes adjustablestabilizers 408 that include cables 410 which extend out to deadmananchors 18 at distal ends of the cables 410. Proximal ends of the cables410 extend up to a tension control system 26. In contrast with theembodiments shown in FIG. 1, embodiments shown in FIGS. 9 and 10 includethe addition of the outer wall 402. The tension control system 26 andassociated adjustable stabilizers 408 of the vertical manhole apparatus400 operate in an area outside the inner pipe 404. The outer wall 402can be adjusted by the tension control system 26 while the inner pipe404 remains in a set location, protected by the extra layer provided bythe outer wall 402. One or more cleanout riser pipes 38 extend insidethe protected inner pipe 404 down to a leachate collection pipe accesspoint 36 where it interfaces with a leachate collection pipe 34. Thecables 410 extend through apertures 412 in the outer wall 402. Eachaperture 412 preferably includes a cable roller 414 or other similarfeature adjacent thereto on which cables 410 can slide or roll.

FIG. 11 shows a vertical manhole apparatus 500 in which one or moretensioning devices 502 are located inside a vertical pipe 14. Theexample shown in FIG. 11 is similar to the embodiment described abovewith respect to FIG. 1 except for the location of the tensioningcomponent(s) of the overall apparatus. In the example shown in FIG. 11,by placing tensioning devices 502 inside the vertical pipe 14 adjacentto apertures 22 through which cables 504 extend, vertical forcesimparted by the cables 504 on the vertical pipe 14 are minimized whichin turn reduces the required force and shorter cables may be used toalign the vertical pipe. Another benefit of this different configurationis that the tension between the vertical pipe 14 and the deadman anchors18 attached at the distal ends of the cables 504 can be directly andmore accurately measured. Examples of a tensioning device 502 that canbe used for this purpose includes hydraulic or electronic winches. Thecables 504 and deadman anchors 18 form at least part of adjustablestabilizers 506. The one or more tensioning devices 502 are preferablyhardwired to a control device 508 or a transmitter in wirelesscommunication with the control device 508 which controls the tensioningdevices 502. Although the use of cables 504 is shown in FIG. 11 whereinthe one or more tensioning devices 502 include one or more winches,other tensioning devices and other types of adjustable stabilizers arecontemplated including, for example, a motor 510 to drive or retract athreaded rod 204 shown for example in FIG. 8 wherein the motor 510preferably includes a linear actuator stepper motor. Multiple motors canbe used, one per rod 204, and each can be manipulated or otherwisecontrolled independent of the others. Generally speaking, the one ormore tensioning devices are used to manipulate the orientation of thevertical pipe. The tensioning devices described herein can be manual ormotorized and can be controlled directly or remotely using control andwireless technology known to persons having ordinary skill in the art.

Certain components that can be used in addition to or instead ofadjustable stabilizers are geomats. FIGS. 12 and 13 show a verticalmanhole apparatus 600 which is held steady in a landfill waste area byone or more geomats 602 attached along a vertical pipe 14. These geomats602 stabilize the waste located around the manhole apparatus 600. In apreferred embodiment, each geomat includes a skirt 604 which fansoutward from an aperture 606. The skirt 604 is defined as asubstantially planar section of material that is preferably made ofplastic or metal mesh material (or a combination thereof). Geomats 602can be attached directly to the vertical pipe 14 via anchors, betweensections (held in place by pressure between sections), or otherattachment means known to persons having ordinary skill in the art) orcan be slidably engaged with the vertical pipe 14.

In FIGS. 12 and 13, geomats 602 are engaged along the vertical pipe 14by rings 608 which are slightly wider than the outer diameter of thevertical pipe 14, thereby allowing each ring 608 to move up and downalong the vertical pipe 14 as waste shifts in the landfill. As thegeomats 602 shift, they continue to apply pressure to the sides of thevertical pipe 14, thereby resisting horizontal forces on the verticalpipe 14. In this way geomats 602 are said to be “engaged with” thevertical pipe 14 even though such geomats 602 may not be directlyattached to or otherwise connected directly to the vertical pipe 14.Each ring defines an aperture 606. The rings 608 are preferably made ofmetal or plastic but can be made from other materials known to personshaving ordinary skill in the art. The rings 608 are attached to theskirts 604 by clamps, wrapped wire, ties or other attachment means knownto persons having ordinary skill in the art. In some embodiments shown,for example, in FIG. 14, the rings 608 include appendages 610 withenlarged ends 612 wherein such appendages 610 extend inward toward thevertical pipe 14. The appendages 610 preferably are configured to slidealong slots 614 defined along the edge of the vertical pipe 14 insiderails 616.

Although one specific example of geomats 602 is shown in FIGS. 12 and13, geomats can come in many different shapes and do not all include anaperture 606 or a ring 608. In different embodiments, different shapedgeomats can be attached to the vertical pipe 14 extending outwardtherefrom and providing increased stability for the waste around thevertical pipe 14, thereby providing increased stability to the verticalpipe 14. In one preferred embodiment, one or more geomats are attachedto the vertical pipe 14 by pinning a portion (e.g., an edge 618) of ageomat or geomats between a first section 12C and a second section 12Dof the vertical pipe 14 so that the geomat(s) is/are firmly attached tothe vertical pipe 14, held in place by the weight of and pressurebetween the first section 12C and the second section 12D of the verticalpipe 14.

Although tensioning devices described herein such as the tension controlsystem 26 and the tensioning devices 502 are described as being on or inthe vertical pipe 14 of the overall manhole apparatus, other embodimentsare contemplated in which tension control devices are located elsewhereincluding, for example, tension control devices 700A, 700B, and 700Cshown in FIG. 15 located adjacent to the edge of a landfill 702 (orotherwise not in the landfill waste itself). When cables are used (e.g.,cables 704A, 704B, and 704C), pulley components (706A, 706B, and 706C)known to persons having ordinary skill in the art can be employed todirect the cables 704 in different orientations and to help controltension on adjustable stabilizers (708A, 708B, and 708C) from outsidethe landfill waste area wherein such adjustable stabilizers are the sameor similar to adjustable stabilizers 16 shown in FIG. 1 and FIG. 2.

Other embodiments are contemplated in which cables, rods, poles, orother devices forming part of adjustable stabilizers extend to and, insome cases, beyond the edges of a landfill waste area so that themanhole apparatus is anchored to solid ground outside the landfill wastearea.

The foregoing description of preferred embodiments of the presentdisclosure has been presented for purposes of illustration anddescription. The described preferred embodiments are not intended to beexhaustive or to limit the scope of the disclosure to the preciseform(s) disclosed. Obvious modifications or variations are possible inlight of the above teachings. The embodiments are chosen and describedin an effort to provide the best illustrations of the principles of thedisclosure and its practical application, and to thereby enable one ofordinary skill in the art to utilize the concepts revealed in thedisclosure in various embodiments and with various modifications as aresuited to the particular use contemplated. All such modifications andvariations are within the scope of the disclosure as determined by theappended claims when interpreted in accordance with the breadth to whichthey are fairly, legally, and equitably entitled.

What is claimed is:
 1. A vertical manhole apparatus for providing accessto one or more leachate collection pipe access points, the apparatuscomprising: a plurality of first pipe segments joined togethervertically above a foundation in a landfill including a first pipe firstsegment wherein the plurality of first pipe segments form a firstvertical pipe; a cleanout riser pipe extending inside the first verticalpipe from a cleanout riser pipe access point to a collection pipe accesspoint providing access to a horizontally oriented leachate collectionpipe; and a first stabilizer engaged with the first pipe first segmentand extending from the first pipe first segment out into waste in thelandfill, the first stabilizer further comprising a first rod connectedto the first pipe first segment, a first cable connected to the firstrod and a first deadman anchor connected to the first cable.
 2. Avertical manhole apparatus for providing access to one or more leachatecollection pipe access points, the apparatus comprising: a plurality offirst pipe segments joined together vertically above a foundation in alandfill including a first pipe first segment wherein the plurality offirst pipe segments form a first vertical pipe; a cleanout riser pipeextending inside the first vertical pipe from a cleanout riser pipeaccess point to a collection pipe access point providing access to ahorizontally oriented leachate collection pipe; a first stabilizerengaged with the first pipe first segment and extending from the firstpipe first segment out into waste in the landfill, the first stabilizerfurther comprising a first rod connected to the first pipe firstsegment, a first cable connected to the first rod and a first deadmananchor connected to the first cable; a second stabilizer engaged withthe first pipe first segment and extending from the first pipe firstsegment, the second stabilizer further comprising a second rod connectedto the first pipe first segment, second cable connected to the secondrod and a second deadman anchor connected to the second cable; and athird stabilizer engaged with the first pipe first segment and extendingfrom the first pipe first segment, the third stabilizer furthercomprising a third rod connected to the first pipe first segment, athird cable connected to the third rod and a third deadman anchorconnected to the third cable.
 3. A vertical manhole apparatus forproviding access to one or more leachate collection pipe access points,the apparatus comprising: a plurality of first pipe segments joinedtogether vertically above a foundation in a landfill including a firstpipe first segment wherein the plurality of first pipe segments form afirst vertical pipe; a cleanout riser pipe extending inside the firstvertical pipe from a cleanout riser pipe access point to a collectionpipe access point proximate a horizontally oriented leachate collectionpipe; a first stabilizer engaged with the first pipe first segment andextending from the first pipe first segment out into waste in thelandfill; and a tension control system wherein the first stabilizerfurther comprises a first cable connected to a first deadman anchor at aproximal end of the first cable and the tension control system at adistal end of the first cable and wherein the tension control systemcontrols the tension of the first cable by increasing or decreasing thetension of the first cable between the tension control system and thefirst deadman anchor.
 4. The vertical manhole apparatus of claim 3further comprising: a second stabilizer engaged with the first pipefirst segment and extending from the first pipe first segment; and athird stabilizer engaged with the first pipe first segment and extendingfrom the first pipe first segment; and the tension control systemwherein (a) the second stabilizer further comprises a second cableconnected to a second deadman anchor at a proximal end of the secondcable and the tension control system at a distal end of the secondcable, and (b) the third stabilizer further comprises a third cableconnected to a third deadman anchor at a proximal end of the first cableand the tension control system at a distal end of the first cable andwherein (1) the tension control system controls the tension of thesecond cable by increasing or decreasing the tension of the second cablebetween the tension control system and the second deadman anchor, and(2) the tension control system controls the tension of the third cableby increasing or decreasing the tension of the third cable between thetension control system and the third deadman anchor.
 5. The verticalmanhole apparatus of claim 3 wherein the tension control system furthercomprises a first winch located inside the first vertical pipe adjacentto an aperture in the first vertical pipe through which the first cableextends.
 6. The vertical manhole apparatus of claim 5 further comprisinga control device for controlling the first winch wherein the controldevice is in communication with the first winch but wherein the controldevice is remote from the first winch.
 7. The vertical manhole apparatusof claim 4 wherein the tension control system further comprises a firstwinch, a second winch, and a third winch and wherein the first winch islocated inside the first vertical pipe adjacent to a first aperture inthe first vertical pipe through which the first cable extends, whereinthe second winch is located inside the first vertical pipe adjacent to asecond aperture in the first vertical pipe through which the secondcable extends, and wherein the third winch is located inside the firstvertical pipe adjacent to a third aperture in the first vertical pipethrough which the third cable extends.
 8. The vertical manhole apparatusof claim 3 wherein the tension control system further comprises a winchlocated adjacent to an edge of waste from the landfill.
 9. The verticalmanhole apparatus of claim 4 wherein the tension control system furthercomprises a plurality of winches located adjacent to an edge of wastefrom the landfill.